Side bearing.



A. PAGE, JR.

SIDE BEARING.

APPLXCATION FILED JUNE 6.1916.

Patented Feb. 6, 1917.

2 SHEETS-SHEET lNVEbyllA A. PAGE, JR.

SIDE BEARING.

APPLICATION FILED sum: 6. L9I6.

1,214,580. Patented Feb; 6, 1917.

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ALWIN PAGE, JR., OF BELLEVUE BOROUGH, PENNSYLVANIA.

SIDE BEARING.

Specification of Letters Patent.

Patented Feb. 6, 1917.

Application filed June 6, 1916. Serial No. 101,902.

To all whom it may concern:

Be it known that I, ALWIN PAGE, J12, a citizen of the United States, and residing in Bellevue Borough, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvements in Side Bearings, of which the following is a specification.

My invention consists in certain new and useful improvements in side bearings for railway cars.

The object in view is the provision of a side hearing which will effectively reduce the friction, relieve the side thrust on the wheel flanges and rails, and prevent binding and uneven wear of the bearing and the surface with which it comes in contact.

For the accomplishment of these purposes, I provide a bearing socket, which may be attached to either the truck bolster or body bolster of the car, in which a roller is mounted to travel longitudinally. The roller is supported at its ends by means of anti-fric tion balls engaging substantially semispherical seats in the ends of the roller and traveling in raceways which may be of substantially semi-spherical cross section in the side walls of the socket or in bearing blocks carried thereby. For the purpose of elevating the roller toward either extremity of its travel said raceways are curved upwardly toward their ends. To enable the roller to roll or rock longitudinally, suliicient play is provided between the ends of the roller and the side walls of the socket or the bearing blocks.

Other novel features of construction and arrangement of parts will appear from the following description.

In the accompanying drawings, which are intended merely to illustrate the principles of my invention, but not to limit the same to the construction shown, Figure 1 is an end view showing my hearing applied to a truck bolster; Fig. 2 is a plan view of the same; Fig. 3 is a sectional view taken along the line IIL-III in Fig. 2; Fig. 4 is a sectional view taken along the line IVIV in Fig. 2; Fig. 5 is a sectional view of a modification taken along the line VV in Fig. 6, and Fig. 6 is a reduced plan view of said modification.

The following is a detailed description of the drawings, reference being first had to Figs. 1, 2, 3 and 4.

A represents the truck bolster and Bthe with holes 2 through which bolts or rivets 3 pass to secure the casting to the bolster.

4 represents a pair of parallel longitudinal or side walls integral with the base 1 and set in from the edge thereof.

5 represents a pair of parallel end walls connecting the side walls 4, and thus inclosing a rectangular socket.

6 represents buttress flanges which support and strengthen the walls of the socket.

D represents bearing blocks, preferably drop forgings, which are secured, as by bolts 7, to the inner faces of the side walls 4, leaving between them a runway of somewhat greater width than the length of a roller E.

In the adjacent faces of the blocks D are provided raceways 8 which are shown as of somewhat less than semi-spherical cross section, and, preferably curved upwardly from their centers toward their ends. The ends of the roller E are provided with somewhat less than semi-spherical seats 9, and in each of said seats 9 is mounted a spherical ball 10, which also engages the adjacent raceway 8.

It is thus evident that the roller is supported at its ends and may roll freely along the raceways, rising as it moves away from the center of its runway in either direction. Both the roller E and the balls 10 are preferably drop forged.

The operation of the bearing is as follows: As the car swings on a curve and the plate B is depressed into contact with the roller E, the turning of the truck in relation to the car body will cause the roller to travel along its runway, rising as it moves and thus tending to force the car body back into the normal horizontal position. This lessens the thrust on the wheel flanges and track rails. Inasmuch as the body bolster is moving out of the horizontal when the bearing is engaged, if the roller were not free to rock or roll longitudinally of itself, the lateral thrust exerted on the roller would cause it to bind in its runway and result in uneven wear of the roller and the plate B. However, the play between the ends of the roller and the blocks D permits the roller to turn or rock longitudinally out of the horizontal so as to maintain a full length contact with the plate B. This action reduces the friction and renders the wear uniform for the full length of the roller. I regard a quarter inch play at either end of the roller as suflicient. To prevent the accumulation of water or dirt in the runway, I provide the end walls with bottom slots 11 at the ends of the runway.

In Figs. 5 and 6,I show the forged blocks D omitted and the side walls 4 thickened and strengthened so that the raceways 8 may be provided in said walls themselves. To enable the bearing to be assembled in this type I make the casting C in two parts joined together longitudinally by means of twin flanges 12 through which pass the bolts or rivets 13. In the type shown'in Figs. 5 and 6, chilled castings are used.

The construction of the bearing is simple and durable and worn or broken parts may lge readily replaced at little expense or troulVhat I desire to claim is 1- 1. A side bearing comprising a base member provided with a runway, the sidewalls of which runway are provided with raceways, a roller adapted to travel in said runway and having a ball seat in each of its ends, and balls supporting the roller by en gaging said seats and said raceways.

2. A side bearing comprlsing a base memher provided with arunway, the side walls of which runway are provided with raceways, a roller of proper length to loosely fit in said runway and having a ball seat in each of its ends, and spherical balls engaging said seats and said raceways whereby said roller is free to travel along said runway and to rock longitudinally.

A. A side bearing comprising a'base member provided with arunway, the side walls of which runway are provided with raceways curving upwardly toward their ends, a roller of the proper length to loosely fit in said runway. and'having a ball seat in each of its ends, and balls engaging said seats and said racewayswhereby said rolleris free to travel along. said runway rising toward the ends of its travel and to rock longitudinally.

Signed at Bellevue, Pa, this 31st day of 7 May, 1916 V V ALW'IN PAGE, JR.

flopies this patent may be obtained for five cents-each, by addressing the 'fcommlssioner of Patents.

Washington, D. 0." i s a 

